CN102056849A - Apparatus for degassing molten glass - Google Patents
Apparatus for degassing molten glass Download PDFInfo
- Publication number
- CN102056849A CN102056849A CN2009801222073A CN200980122207A CN102056849A CN 102056849 A CN102056849 A CN 102056849A CN 2009801222073 A CN2009801222073 A CN 2009801222073A CN 200980122207 A CN200980122207 A CN 200980122207A CN 102056849 A CN102056849 A CN 102056849A
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- Prior art keywords
- melten glass
- groove
- deaeration
- deaeration groove
- bubble
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/225—Refining
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/182—Stirring devices; Homogenisation by moving the molten glass along fixed elements, e.g. deflectors, weirs, baffle plates
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/20—Bridges, shoes, throats, or other devices for withholding dirt, foam, or batch
- C03B5/205—Mechanical means for skimming or scraping the melt surface
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/225—Refining
- C03B5/2252—Refining under reduced pressure, e.g. with vacuum refiners
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
An apparatus for degassing a molten glass is provided which can heighten a clarifying effect without the need of changing conditions for a clarification step, such as the degree of vacuum and the temperature of the molten glass. The apparatus for degassing a molten glass includes a degassing tank. The apparatus is characterized in that the degassing tank is equipped inside with a means for raising bubbles which comprises a first member and a second member, that the first member has been attached to the inner wall of the degassing tank so that at least part of the first member is immersed in the molten glass and the member extends throughout the whole width of the molten-glass passage in the degassing tank, and that the second member has been attached to the inner wall of the degassing tank so as to extend upward from the bottom side of the degassing tank.
Description
Technical field
The present invention relates to be used for removing the defoaming device of the melten glass of bubble from the melten glass of continuous supply.
Background technology
In the past, in order to improve the quality of the glasswork obtain of being shaped, before the melten glass that the raw material fusing is formed with smelting furnace being formed, adopted the clarification operation that the bubble that produces in the melten glass is removed by building mortion.
About this clarification operation, known following method: in raw material, add sodium sulfate (Na in advance
2SO
4) wait as finings, will make raw materials melt and melten glass under specified temperature, store and keep certain hour, thereby make bubble growth in the melten glass, come-up and bubble removed.
In addition, known following vacuum deaerator method: melten glass is imported in the reduced atmosphere, bubble in the molten glass flow of continuous flow is grown up, make bubble floating contained in the melten glass, break and bubble is removed, from reduced atmosphere, discharge then.
In such vacuum deaerator method, forming molten glass flow, this molten glass flow is moved in reduced atmosphere, specifically is that this molten glass flow is moved in the vacuum deaerator groove of inside maintenance specified vacuum degree.In the vacuum deaerator groove when mobile, the interior contained bubble of melten glass is grown up in the short period of time, the buoyancy of the bubble that utilization has been grown up floats it in melten glass, on the surface of melten glass bubble is broken, and can remove bubble from molten glass surface efficiently by this.At this moment, in order to remove bubble effectively, in the vacuum deaerator groove, when mobile, must add the ascent rate of air pocket, make bubble floating in the melten glass to molten glass surface from molten glass surface.Not so, the melten glass that contains bubble goes out from the vacuum deaerator concentrated flow, causes end article to comprise bubble.
Therefore, think that by the pressure that reduces the reduced atmosphere of carrying out vacuum deaerator as far as possible bubble being grown up improves ascent rate, the effect of vacuum deaerator is improved.But, if reduce the pressure of the reduced atmosphere of carrying out vacuum deaerator, then melten glass inside produces a large amount of new bubbles, float to the bubble of molten glass surface and do not break, a large amount of floating and form alveolar layer, the part of this alveolar layer is discharged from melten glass and forms the melten glass that contains bubble sometimes.In addition, if alveolar layer increases, then be difficult to make the liquid level temperature decline of molten glass flow and bubble is broken, alveolar layer further develops.Consequently, be full of by uncracked bubble in the groove of reduced atmosphere.Therefore, the alveolar layer that is full of in the described groove contacts with the impurity at the top that is attached to groove, and this impurity is sneaked in the melten glass.Therefore, from carrying out the angle that vacuum deaerator is handled effectively, make the hypotensive method of reduced atmosphere unsatisfactory (with reference to patent documentation 1).
In addition, except the size of bubble, the ascent rate of the bubble of melten glass also is subjected to the influence of the viscosity of melten glass, so think by reducing the viscosity of melten glass, promptly improves the temperature of melten glass, can make bubble floating effectively.But, if make the temperature of melten glass too high, then the reaction of refractory bodies such as the material of melten glass and the stream that contacts with melten glass, for example refractory brick comes to life, not only make and produce new bubble in the melten glass, and the material part stripping of stream causes the quality of glass to descend to melten glass.In addition, if improve the temperature of melten glass, then the intensity of the material of stream self also descends, and not only can shorten the life-span of device, but also need be used to keep the extra equipment such as heating unit of higher melten glass temperature.Therefore, for suitably and the vacuum deaerator that carries out melten glass effectively handle, can not make hypotony, can not make the design temperature of melten glass too high (with reference to patent documentation 1).
Patent documentation 1: the Japanese Patent spy opens the 2000-302456 communique
The summary of invention
In order to solve above-mentioned prior art problems, the object of the present invention is to provide the defoaming device that can under the situation of the condition of the clarification operations such as temperature that do not change vacuum tightness and melten glass, make the melten glass that clarifying effect improves.
To achieve these goals, the invention provides a kind of defoaming device of melten glass, this device comprises the introducing port with melten glass and the deaeration groove of relief outlet, it is characterized in that, be provided with the bubble floating unit that comprises first member and second member in the described deaeration groove, the mode of whole width that described first member impregnated in melten glass with at least a portion and is arranged at the melten glass stream of described deaeration groove is installed on the inwall of described deaeration groove, the mode that described second member extends upward with the bottom surface side from described deaeration groove is installed on the inwall of described deaeration groove, the condition setting of described first member and described second member following to satisfy (1)～(3):
(1) described first member is positioned at the upstream side of the flow direction of melten glass with respect to described second member;
(2) distance of described first member on the flow direction of melten glass and described second member is 50～400mm;
(3) will be from the bottom surface of described deaeration groove be made as h to the height of the lower end of described first member
1, the height from the bottom surface of described deaeration groove to the upper end of described second member is made as h
2The time, satisfy relational expression h
1≤ h
2
In the defoaming device of melten glass of the present invention, better be that described second member is provided with the gap that can supply melten glass to pass through.
In addition, in the defoaming device of melten glass of the present invention, better be between the inwall of described deaeration groove and described second member, to have the gap that to pass through for melten glass.
In addition, in the defoaming device of melten glass of the present invention, better be that the maximum value with the internal diameter of the horizontal direction of described deaeration groove is made as W
1, the maximum value of the transverse width of described second member is made as W
2The time, satisfy relational expression 0.2≤W
2/ W
1≤ 0.9.
In addition, in the defoaming device of melten glass of the present invention, better be height h from bottom surface to the lower end of described first member of described deaeration groove
1Be 70～250mm.
In addition, in the defoaming device of melten glass of the present invention, better be that the planeform of described first member satisfies following formula:
w
1＜w
2；
In the formula, w
1Be the flow transverse width of described first member of direction upstream side of melten glass, w
2Be the flow transverse width of described first member in direction downstream side of melten glass.
In addition, in the defoaming device of melten glass of the present invention, can in described deaeration groove, be provided with the described bubble floating unit more than 2.
If adopt the defoaming device of melten glass of the present invention, then can under the situation of the condition of the clarification operations such as temperature that do not change vacuum tightness or melten glass, slough the residual bubble in the middle level that is present in melten glass, the clarifying effect of melten glass is improved.The defoaming device of melten glass of the present invention is as the excellent especially effect of vacuum degassing apparatus time performance, but as adopting high temperature defecation method for example, using He also to bring into play than the better effect of defoaming device in the past during as the defoaming device of the defecation method of finings or their defecation methods except that the vacuum deaerator method such as combination as the defecation method of finings, the oxide compound that uses Sb or As.
The simple declaration of accompanying drawing
Fig. 1 is the sectional view of a structure example of the defoaming device of expression melten glass of the present invention.
Fig. 2 is the stereographic map of the section after the part of expression defoaming device 10 shown in Figure 1 is omitted.
Fig. 3 is the vertical view of defoaming device 10 shown in Figure 1.
Fig. 4 is the sectional view of the line A-A ' section of deaeration groove (cross section ellipse) 11 shown in Figure 1.
Fig. 5 is the sectional view of the line B-B ' section of deaeration groove (cross section ellipse) 11 shown in Figure 1.
Fig. 6 is the sectional view of the line A-A ' section of deaeration groove (cross section rectangle) 11 shown in Figure 1.
Fig. 7 is the sectional view of the line B-B ' section of deaeration groove (cross section rectangle) 11 shown in Figure 1.
Fig. 8 is the sectional view of the line A-A ' section of deaeration groove (cross section is trapezoidal) 11 shown in Figure 1.
Fig. 9 is the sectional view of the line B-B ' section of deaeration groove (cross section is trapezoidal) 11 shown in Figure 1.
Figure 10 is the vertical view that the planeform of first member is formed the defoaming device 10 of approximate V word shape.
Figure 11 is the vertical view that the planeform of first member is formed the defoaming device 10 of stepped (convex character shape).
Figure 12 is the sectional view of the line B-B ' section of deaeration groove (cross section ellipse) 11 with second member that forms T word shape.
Figure 13 is the sectional view with line B-B ' section of the deaeration groove (cross section ellipse) 11 that forms zonal second member.
Figure 14 is the sectional view of the line B-B ' section of deaeration groove (cross section rectangle) 11 with second member that forms T word shape.
Figure 15 is the sectional view with line B-B ' section of the deaeration groove (cross section rectangle) 11 that forms zonal second member.
To be expression be provided with the vertical view of defoaming device 10 of the embodiment of the 3rd member 17 as the downstream side at second member 15 of the defoaming device of melten glass of the present invention to Figure 16.
Figure 17 is the sectional view of the line C-C ' section of the oval-shaped deaeration groove 11 in cross section.
Figure 18 is the sectional view of line C-C ' section of the deaeration groove 11 of square-section.
The mode that carries out an invention
Below, the present invention will be described with reference to accompanying drawing.
Fig. 1 is the sectional view of expression with the structure example of defoaming device (hereinafter referred to as " defoaming device of the present invention ") when constituting as vacuum degassing apparatus of melten glass of the present invention.Defoaming device of the present invention preferably constitutes as vacuum degassing apparatus, but at defoaming device as the melten glass except that vacuum degassing apparatus, for example adopt the high temperature defecation method, use He, also bring into play good clarifying effect as the defecation method of finings, the oxide compound during that uses Sb or As the defoaming device of the defecation method of finings or their combination etc.Constitute under the situation of defoaming device of the present invention as these defoaming devices except that vacuum degassing apparatus, in the deaeration groove of these defoaming devices, be provided with described later as unitary first member of bubble floating and second member.
Defoaming device shown in Figure 1 (vacuum degassing apparatus) 10 comprises the deaeration groove (vacuum deaerator groove) 11 of the hollow structure of the inner stream that forms melten glass.The shape of deaeration groove 11 can be the shape as approximate circles such as circular, semicircle and ellipses, also can be polygonal shapes such as rectangle, trapezoidal, hexagon and octagon.
The air pressure inside of deaeration groove (vacuum deaerator groove) 11 is set as and is lower than normal atmosphere, makes the bubble among the melten glass G that is supplied with float and break.Deaeration groove (vacuum deaerator groove) 11 has the introducing port and the relief outlet of melten glass, and the introducing port of this melten glass is connected with upcast 12, and the relief outlet of this melten glass is connected with downtake 13.Upcast 12 is that the melten glass G before deaeration is handled attracts to rise and imports the importing unit of the melten glass G of this deaeration groove (vacuum deaerator groove) 11.Therefore, the bottom of upcast 12 impregnated among the melten glass G in the upstream slot 220.Melten glass G is supplied to upstream slot 220 from melting channel 200.On the other hand, downtake 14 is that melten glass G after deaeration is handled descends and the lead-out unit of the melten glass G that derives from this deaeration groove (vacuum deaerator groove) 11.Therefore, the bottom of downtake 13 impregnated among the melten glass G in the downstream slot 240.Melten glass in the downstream slot 240 is exported to the treatment trough (not shown) of subsequent handling.
Below, when mentioning " upstream " and " downstream " in this specification sheets, be meant the upstream and downstream of the flow direction of the melten glass G of circulation in defoaming device 10.In addition, when mentioning " upstream side " and " downstream side ", be meant the upstream side and the downstream side of the flow direction of the melten glass G of circulation in defoaming device 10.
Also have, deaeration groove (vacuum deaerator groove) 11 is accommodated in the decompression housing usually, by to the attraction of reducing pressure in the decompression housing, thereby remains on the subatmospheric decompression state of air pressure of deaeration groove (vacuum deaerator groove) 11 inside, but not shown.On the other hand, deaeration groove (vacuum deaerator groove) 11 is not accommodated under the intravital situation of decompression shell, by using vacuum pump etc., thereby remain on the subatmospheric decompression state of air pressure of vacuum deaerator groove 11 inside to the attraction of reducing pressure of the upper space of the melten glass G of deaeration groove (vacuum deaerator groove) 11.
In the defoaming device of the present invention (vacuum degassing apparatus) 10, in deaeration groove (vacuum deaerator groove) 11, be provided with the bubble floating unit that comprises first member 14 and second member 15.
Below, on the basis of Fig. 1, describe with further reference to pair bubble floating unit, Fig. 2～9.
Fig. 2 is the stereographic map of the section after the part of expression defoaming device (vacuum degassing apparatus) 10 shown in Figure 1 is omitted.Also have, the stereographic map of Fig. 2 is the figure of the cross-sectional shape of deaeration groove (vacuum deaerator groove) 11 when being rectangle.Fig. 3 is the vertical view of defoaming device (vacuum deaerator groove) 10 shown in Figure 1.Wherein, omitted the wall on deaeration groove (vacuum deaerator groove) 11 tops, the internal structure that makes deaeration groove (vacuum deaerator groove) 11 as seen.Fig. 4,6, the 8th, deaeration groove (vacuum deaerator groove) 11 A-A ' along the line are blocked and sectional view.Fig. 5,7, the 9th, deaeration groove (vacuum deaerator groove) 11 B-B ' along the line are blocked and sectional view.Also have, the cross-sectional shape of the deaeration groove shown in Fig. 4,5 (vacuum deaerator groove) 11 (11a) is oval, the cross-sectional shape of the deaeration groove shown in Fig. 6,7 (vacuum deaerator groove) 11 (11b) is a rectangle, and the cross-sectional shape of the deaeration groove shown in Fig. 8,9 (vacuum deaerator groove) 11 (11c) is trapezoidal.
Among the figure, the mode of whole width that first member 14 impregnated in melten glass G with at least a portion and is arranged at the melten glass stream of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c) is installed on the inwall of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c).
The mode that second member 15 extends upward with the bottom surface side from deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c) is installed on the inwall of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c).
Among the figure, first member 14 and second member 15 directly are installed on the inwall of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c), are installed on the inwall of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c) indirectly with supporting member but also can be situated between.
In the defoaming device of the present invention (vacuum degassing apparatus) 10, the condition setting of first member 14 and second member 15 following to satisfy (1)～(3) is in deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c):
(1) first member 14 is positioned at upstream side with respect to second member 15;
(2) first member 14 on the flow direction of melten glass G and second member 15 is 50～400mm apart from d;
(3) will be made as h from the height of the lower end of bottom surface to the first member 14 of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c)
1, be made as h from the height of the upper end of bottom surface to the second member 15 of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c)
2The time, satisfy relational expression h
1≤ h
2
The vacuum deaerator method is following method: melten glass is passed through in inside remains in the deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c) of decompression state, thereby the bubble in this molten glass flow is grown up, make bubble floating to molten glass surface and break, thereby remove the bubble in this melten glass.But, according to the vacuum tightness in for example deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c), the temperature in the deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c), the difference of various conditions when being supplied to bubbles volume in the melten glass of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c), the vacuum deaerators such as flow velocity of melten glass in the deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c), a part that is present in the bubble in the melten glass sometimes can't float to the surface of melten glass.Residual bubble like this can't be removed by vacuum deaerator.
The present inventor finds that so residual bubble mainly is present in the middle level of melten glass after conscientiously research has been carried out in the behavior of the bubble in the melten glass.Here, the middle level of melten glass is meant in deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c) part beyond the skim-coat and bottom among the mobile melten glass G; The part of 0.95h top when described top layer is made as h for the liquid level with melten glass G, the part of 0.2h below when described bottom is made as h for the liquid level with melten glass G.In other words, the middle level of melten glass is meant the part of 0.2～0.95h when liquid level with melten glass G is made as h.
In the defoaming device of the present invention (vacuum degassing apparatus), by first member 14 that satisfies above-mentioned condition and second member 15 being set, thereby the middle level that contains the melten glass of residual bubble can be induced to the top layer of melten glass as the bubble floating unit.
If the middle level that contains the melten glass of residual bubble is induced to the top layer of melten glass, then residual bubble is present in the position near the surface of melten glass, and the pressure head of melten glass (head pressure) reduces, and therefore residual bubble is grown up easily, and the deaeration of residual bubble obtains promoting.Consequently the clarifying effect of melten glass improves.
In the defoaming device of the present invention (vacuum degassing apparatus) 10, first member 14 that satisfies above-mentioned condition and second member 15 must be set as the bubble floating unit.
Open in the vacuum degassing apparatus of the melten glass shown in the 2000-7344 communique as restraining mass 36a, 36b, 336a, 336b revealed with the similar structure of first member the Japanese Patent spy in appearance.In addition, revealed in the glass furnace of in Japanese patent laid-open 9-124323 communique, putting down in writing with the similar structure of second member in appearance as the cross-section sill 14 of upstream zone of delimiting this smelting furnace and downstream zone.
Yet the function of these structures is different with bubble floating of the present invention unit.The Japanese Patent spy opens in the vacuum degassing apparatus of the melten glass shown in the 2000-7344 communique, restraining mass 36a, 36b, 336a, 336b are used to tackle and had floated to the bubble of molten glass surface before arriving restraining mass 36a, 36b, 336a, 336b and they are broken, and the middle level that does not have to contain the melten glass of residual bubble fully is induced to the intention on the top layer (surface) of melten glass.On the other hand, in the glass furnace shown in the Japanese patent laid-open 9-124323 communique, cross-section sill 14 are used to delimit the upstream zone and the downstream zone of this smelting furnace 14, convection current recirculation to the melten glass that forms at this upstream zone, downstream zone respectively separates, and the middle level that does not have to contain the melten glass of residual bubble fully is induced to the intention on the top layer (surface) of melten glass.Promptly, in the glass furnace shown in the Japanese patent laid-open 9-124323 communique, the downstream zone that is positioned at the downstream of cross-section sill 14 is the clarifying area of melten glass, but it is to carry out the clarification of melten glass by making melten glass carry out convection current recirculation at this downstream zone, and melten glass defoaming device clarifying of the present invention (vacuum degassing apparatus) by carrying out this melten glass in remaining in the deaeration groove of decompression state (vacuum deaerator groove) is obviously different on for the clarifying thinking of melten glass with making.And, since exist cross-section sill 14, the melten glass of downstream zone be induced to the below, but not molten glass surface, promptly above.By above-mentioned aspect as can be known, it is different fully that the Japanese Patent spy opens the function that the cross-section sill 14 shown in restraining mass 36a, the 36b shown in the 2000-7344 communique, 336a, 336b and the Japanese patent laid-open 9-124323 communique are had, and their function is also different fully with bubble floating of the present invention unit.In addition, the Japanese Patent spy opens the middle level of not putting down in writing melten glass in 2000-7344 communique and the Japanese patent laid-open 9-124323 communique and has residual bubble, does not also put down in writing the content that need make this residual bubble floating, break and remove certainly.Therefore, though it is similar in appearance with first member of the present invention and second member respectively that the Japanese Patent spy opens the cross-section sill 14 shown in restraining mass 36a, the 36b shown in the 2000-7344 communique, 336a, 336b and the Japanese patent laid-open 9-124323 communique, making up restraining mass 36a, 36b, 336a, 336b and cross-section sill 14, to constitute the unitary technical scheme of bubble floating of the present invention be not obvious invention for those skilled in the art.
In the defoaming device of the present invention (vacuum degassing apparatus), by in deaeration groove (vacuum deaerator groove), first member and second member being disposed at suitable position, can producing flowing of rising on the middle level that makes the melten glass that contains residual bubble efficiently.In addition, as described later, by the gap that can pass through for melten glass is set between the inwall of deaeration groove (vacuum deaerator groove) and second member,, the residual bubble that has floated is trapped near the top layer and can descend perhaps in the gap that second member self setting can be passed through for melten glass.By their effect, deaeration efficient improves.
In the defoaming device of the present invention (vacuum degassing apparatus) 10, for the middle level of bringing into play the effect that the bubble floating unit is set and produces, being about to contain the melten glass of residual bubble is induced to the effect on the top layer (surface) of melten glass, must first member 14 be set at the whole width of the melten glass G stream of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c).
Height h from the lower end of bottom surface to the first member 14 of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c)
1Better be to satisfy h when the liquid level with melten glass G is made as h
1=0.2h～0.8h.For example, when the liquid level h of melten glass G is 300mm, h
1Better be 60～240mm.
If h
1In above-mentioned scope, then be induced to aspect the effect on top layer of melten glass preferably in the middle level of melten glass that performance will contain residual bubble, and flowing of the melten glass G in the deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c) can not hindered because of first member 14 is set.
h
1Be more preferably 0.25h～0.75h, further be more preferably 0.3h～0.7h.
Also have, the height D of the melten glass stream of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c) and the relation of the liquid level h of melten glass G are according to the kind of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c) and different, under the situation of the deaeration groove of platinum system or platinum alloy system (vacuum deaerator groove), common D=1.1～4.0h, better be 1.25～2.7h, be more preferably 1.3～2.4h.On the other hand, under the situation of the deaeration groove of compact substance refractory body system (vacuum deaerator groove), D=1.8～7.0h better is 2.0～5.4h usually, is more preferably 2.3～4.7h.
In the defoaming device of the present invention (vacuum degassing apparatus) 10, the shape of first member is not limited to illustrated shape.
For example, in the cross-sectional shape shown in Figure 1, first member 14 vertically is provided with respect to horizontal direction, but this first member 14 also side or upstream side tilt downstream.For example, angle of inclination when inclination is oblique downstream with the upper end of first member 14 be made as on the occasion of the time (when the angle of inclination when upstream inclination is oblique with the upper end of first member 14 is made as negative value), first member 14 can tilt to downstream side or upstream side in tilt angle alpha is-30 °～+ 30 ° scope.
In addition, in the planeform shown in Figure 3, first member 14 is tabular, but the planeform of first member 14 is not limited thereto.Figure 10, the 11st, the vertical view same with Fig. 3.But the planeform of first member is different with first member 14 shown in Figure 3.The planeform of the first member 14a shown in Figure 10 is approximate V word shape, and the planeform of the first member 14b shown in Figure 11 is convex (stepped).Also have, among Figure 10,11, the planeform of second member is also different with Fig. 3.Second member of Figure 10 is the second member 15a shown in Figure 12,14, and second member of Figure 11 is the second member 15b shown in Figure 13,15.
The effect on top layer that the middle level of the melten glass that will contain residual bubble of the first member 14a, the 14b shown in Figure 10,11 is induced to melten glass is better than flat first member 14 shown in Figure 3.
But, use planeform to be under the situation of first member of approximate V word shape, the first member 14a shown in must image pattern 10 adopts the little approximate V word shape of transverse width of upstream side like that.Similarly, use planeform to be under the situation of first member of convex, the first member 14b shown in must image pattern 11 adopts the little convex of transverse width of upstream side like that.
Transverse width in the use planeform must satisfy following formula (1) under the situation of upstream side first member different with the downstream side.
w
1＜w
2…(1)
In the formula, w
1Be the transverse width of first member of upstream side, w
2Transverse width for first member in downstream side.
Planeform satisfy following formula (1) even the shape of first member except that the first member 14b of the first member 14a of approximate V word shape shown in Figure 10, convex shown in Figure 11, the middle level that will contain the melten glass of residual bubble is induced to the effect on top layer of melten glass, and also flat first member 14 than shown in Figure 3 is good.Satisfy first member of following formula (1) as planeform, except that above-mentioned shape, can also exemplify first member that planeform is U word shape.
Transverse width in the use planeform better is to satisfy following formula (2) under the situation of upstream side first member different with the downstream side, is more preferably and satisfies following formula (3).
w
1＜0.5×w
2…(2)
w
1＜0.1×w
2…(3)
In addition, in the cross-sectional shape shown in Fig. 4,6,8, first member 14 is the tabular of the lower surface level that impregnated in the melten glass, but the shape of first member is not limited thereto.For example, shown in Fig. 4,6,8 towards cross-sectional shape in, first member can have special-shaped portions such as protuberance, recess by the lower surface in impregnated in melten glass.In addition, first member can be the shape that the lower surface that impregnated in the melten glass bends to U word shape etc.
Shown in Fig. 2,3,5,7,9, second member 15 is different with first member 14, be not arranged at the whole width of the melten glass stream of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c), have the gap that can supply melten glass G to pass through between the inwall (sidewall) of second member 15 and deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c).
Similarly second member 15 is being arranged under the situation of whole width of melten glass stream of deaeration groove (vacuum deaerator groove) 11 with first member 14, the middle level that also can bring into play the melten glass that will contain residual bubble is induced to the effect on the top layer (surface) of melten glass, if but as Fig. 2,3,5,7,9 institutes are shown in second member 15 and deaeration groove (vacuum deaerator groove) 11 (11a, 11b, the gap that can supply melten glass G to pass through is set between inwall 11c) (sidewall), the melten glass that then can prevent to be induced to the top layer of melten glass moves downwards, so preferred.
The middle level that defoaming device of the present invention (vacuum degassing apparatus) 10 will contain the melten glass of residual bubble by the bubble floating unit is induced to the top layer of melten glass, if but the melten glass that was positioned at the middle level originally moves to the top layer, the melten glass that then is induced to the top layer of melten glass may move downwards and can't slough residual bubble.
If as Fig. 2,3,5,7,9 institutes are shown in second member 15 and deaeration groove (vacuum deaerator groove) 11 (11a, 11b, the gap that can supply melten glass G to pass through is set between inwall 11c) (sidewall), then pass through the melten glass of noresidue bubble in gap or the few melten glass of residual bubble and entered into the middle level that the downside of melten glass that is induced to the top layer of melten glass by the bubble floating unit forms new melten glass, therefore the melten glass that is induced to the top layer of melten glass can not move downwards, can slough residual bubble, thereby the clarifying effect of melten glass improves.When here, the melten glass that residual bubble is few is meant the residual number of bubbles in the middle level of melten glass is made as a/kg residual number of bubbles 0.01 * a/kg below, better be 0.005 * a/below the kg, be more preferably 0.001 * a individual/ melten glass below the kg.
Figure 12 and Figure 13 are the figures same with Fig. 5, and Figure 14 and Figure 15 are the figures same with Fig. 7.But, the shape of second member and Fig. 5,7 different.The cross-sectional shape of the second member 15a shown in Figure 12,14 is approximate T word shape, has the gap 16 that can supply melten glass G to pass through between the inwall (wall of sidewall and bottom) of second member 15b that is approximate T word shape and deaeration groove (vacuum deaerator groove) 11 (11a, 11b).
It is banded that the cross-sectional shape of the second member 15b shown in Figure 13,15 is, and has the gap 16 that can supply melten glass G to pass through between the inwall (wall of bottom) that is zonal second member 15b and deaeration groove (vacuum deaerator groove) 11 (11a, 11b).
Structure by Figure 12～15, the melten glass that has passed through the gap also enters into the middle level that the downside of melten glass that is induced to the top layer of melten glass by the bubble floating unit forms new melten glass, therefore the melten glass that is induced to the top layer of melten glass can not move downwards, can slough residual bubble, thereby the clarifying effect of melten glass improves.
Also have, in the illustrated form, between the inwall (wall of sidewall and bottom) of second member and deaeration groove (vacuum deaerator groove), have the gap that can supply melten glass to pass through, but also can have the gap that can supply melten glass to pass through by second member self.
In the second above-mentioned member, second member 15 shown in Fig. 5,7,9 helps making because of simple shape, and be easy to be installed on the inwall of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c), and the gap is set and produce above-mentioned respond well, so preferred especially.Promptly, in deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c), the flow velocity of the melten glass of the central part of melten glass stream is fast, the residence time of melten glass is short, therefore in the middle level of melten glass, the bubble number that passes through in the unit time of the central part of melten glass stream is more than the sidepiece of melten glass stream.The shape of second member 15 shown in Fig. 5,7,9 is because of carrying out the more preferably respond well of deaeration to the residual bubble in the melten glass of the central part by the melten glass stream.
For second member 15 shown in Fig. 5,7,9, the maximum value of the internal diameter of the horizontal direction of deaeration groove (vacuum deaerator groove) 11 is made as W
1, the maximum value of the transverse width of second member 15 is made as W
2The time, if satisfy relational expression 0.2≤W
2/ W
1≤ 0.9, the middle level that then will contain the melten glass of residual bubble be induced to melten glass the top layer effect and the gap is set and the above-mentioned effect that produces is all good, so preferred.
In the defoaming device of the present invention (vacuum degassing apparatus) 10, will be made as h from the height of the lower end of bottom surface to the first member 14 of deaeration groove (vacuum deaerator groove) 11 (11a, 11b, 11c)
1, be made as h from the height of the upper end of bottom surface to the second member 15 of deaeration groove (vacuum deaerator groove) 11
2The time, by satisfying relational expression h
1≤ h
2, the middle level that can bring into play the melten glass that will contain residual bubble is induced to the effect on the top layer of melten glass.
In the defoaming device of the present invention (vacuum degassing apparatus) 10, h
1And h
2Better be to satisfy following formula (4).
h
2-h
1≥20mm (4)
When the liquid level of melten glass G is made as h, preferred h
2〉=0.3h.For example, when the liquid level h of melten glass G is 300mm, h
1Better be more than 90mm.
If h
2In above-mentioned scope, then be induced to aspect the effect on top layer of melten glass preferred in the middle level of the melten glass that will contain residual bubble.
Also have, exist the gap or second member self that can pass through to exist under the situation in the gap that can pass through for melten glass G between the inwall (sidewall) of second member and deaeration groove (vacuum deaerator groove) for melten glass G, can h
2〉=h.That is, the upper end of second member can be than the liquid level height of melten glass G.
h
2Better be 0.4～0.9h, be more preferably 0.5～0.8h.
In the defoaming device of the present invention (vacuum degassing apparatus) 10, the shape of second member is not limited to illustrated shape.
For example, in the cross-sectional shape shown in Figure 1, second member 15 vertically is provided with respect to horizontal direction, but this second member 15 also side or upstream side tilt downstream.For example, angle of inclination when inclination is oblique downstream with the upper end of second member 15 be made as on the occasion of the time (when the angle of inclination when upstream inclination is oblique with the upper end of second member 15 is made as negative value), second member 15 can be in inclination angle beta be-30 °～+ 30 ° scope, better be in-15 °～+ 15 ° the scope, be more preferably in-5 °～+ 5 ° the scope to tilt to downstream side or upstream side.
In addition, in the planeform shown in Figure 3,15 li tabulars of second member, but the planeform of second member 15 is not limited thereto.For example, the first member 14a shown in can image pattern 10 is such, and the planeform of second member is approximate V word shape, and the first member 14b shown in also can image pattern 11 is such, and the planeform of second member is convex.In addition, the planeform of second member also can be U word shape.
In the defoaming device of the present invention (vacuum degassing apparatus) 10, first member 14 on the flow direction of melten glass G and second member 15 be 50～400mm apart from d.If first member 14 and second member 15 apart from d greater than 400mm, then can't give full play to the effect that the middle level that will contain the melten glass of residual bubble is induced to the top layer of melten glass.If first member 14 and second member 15 apart from d less than 50mm, then both distances are too short, so the constricted flow of melten glass G.
When preferably being made as L with length with the melten glass stream of deaeration groove (vacuum deaerator groove) 11 from the condition setting bubble floating unit of distance more than 0.1L of upstream extremity to the first member 14 of deaeration groove (vacuum deaerator groove) 11.Better be with from the distance of upstream extremity to the first member 14 of deaeration groove (vacuum deaerator groove) 11 more than 0.2L, be more preferably the condition setting bubble floating unit of 0.4～0.9L.
Also have, the size of deaeration groove (vacuum deaerator groove) 11 can suitably be selected according to the shape of employed defoaming device (vacuum degassing apparatus) 10 and deaeration groove (vacuum deaerator groove) 11, but also can be set at following ranges.
The length of the melten glass stream on the horizontal direction: 1～20m
The maximum width of melten glass stream: 0.2～10m
Under the situation of deaeration groove cylindraceous (vacuum deaerator groove) 11a of cross section ovalize as shown in Figure 4, one of its size is for example descended.
Length on the horizontal direction: 1～20m
Internal diameter (major diameter): 0.2～3m
In the defoaming device of the present invention (vacuum degassing apparatus), can in deaeration groove (vacuum deaerator groove), be provided with the bubble floating unit more than 2.Be provided with in deaeration groove (vacuum deaerator groove) under the unitary situation of bubble floating more than 2, the middle level that will contain the melten glass of residual bubble is induced to the effect raising on the top layer of melten glass.
Be provided with in deaeration groove (vacuum deaerator groove) under the unitary situation of bubble floating more than 2, the distance of second member that must make the bubble floating distance between cells, promptly is positioned at upstream side and first member that is positioned at the downstream side is more than 100mm.The bubble floating distance between cells better is more than 200mm, is more preferably more than 400mm.In addition, the bubble floating distance between cells better is below 1500mm.
In the defoaming device of the present invention (vacuum degassing apparatus), can in deaeration groove (vacuum deaerator groove), be provided with the unit except that bubble come-up unit.Figure 16 is the figure same with Fig. 3, Figure 17 and Figure 18 be deaeration groove shown in Figure 16 (vacuum deaerator groove) 11 C-C ' along the line are blocked and sectional view.Also have, the cross-sectional shape ovalize of deaeration groove shown in Figure 17 (vacuum deaerator groove) 11 (11a), the cross-sectional shape of deaeration groove shown in Figure 180 (vacuum deaerator groove) 11 (11b) is rectangular.
In the deaeration groove shown in Figure 16～18 (vacuum deaerator groove) 11 (11a, 11b), be provided with the 3rd member 17 in the downstream side of second member 14.As mentioned above, because the residual bubble in the melten glass of the central part by the melten glass stream is carried out the respond well of deaeration, so Fig. 5, second member 15 shown in 7 is as the preferred form of second member, second member 15 and deaeration groove (vacuum deaerator groove) 11 (11a, there is the gap that can supply melten glass G to pass through between inwall 11b) (sidewall), when the middle level that therefore contains the melten glass of residual bubble is induced to the top layer of melten glass, be induced to deaeration groove 11 (11a, sidewall direction 11b), but not the central part of melten glass stream, floating to the distribution of the residual bubble on the top layer of melten glass to become inhomogeneous.If the 3rd member 17 shown in Figure 16～18 is set in the downstream side of second member 15 shown in Fig. 5,7, then the melten glass that is induced to the sidewall direction of deaeration groove 11 (11a, 11b) by second member 15 can be induced to the central part of melten glass stream, the residual bubble that floats to the top layer of melten glass is distributed equably.
In deaeration groove (vacuum deaerator groove), be provided with under the unitary situation of bubble floating more than 2, the 3rd member more than 2 also can be set.That is, can in its downstream side the 3rd member be set for each second member.On the other hand, also 1 the 3rd member can only be set.That is, can in its downstream side the 3rd member be set for second member in downstream side.
The cross-sectional shape that first member 14 and second member 15 (also comprising the 3rd member when the 3rd member 17 is set) get as long as its planeform and A-A ' along the line or line B-B ' block is above-mentioned shape, be not particularly limited, can be tabular member, also can be blocky member.
Other of the defoaming device that contacts with melten glass (vacuum degassing apparatus) 10 constitute the unit, be that deaeration groove (vacuum deaerator groove) 11, upcast 12 and downtake 13 also must use thermotolerance and for the good material of the solidity to corrosion of melten glass, use the non-metal inorganic material, compact substance refractory body of above-mentioned platinum, platinum alloy, ceramic-like etc.
Embodiment
Below, the present invention will be described in more detail by embodiment and comparative example, but the present invention is not limited to these embodiment.
By simulation the clarifying effect of the melten glass in the vacuum deaerator groove is estimated.In the simulation, the behavior of the bubble in the melten glass is analyzed by the computer program that uses finite element method.Also have, be set at following condition and perform calculations: bubble produces randomly in the lower end of upcast, and the temperature of melten glass is 1430 ℃, and viscosity is 100Pas.
The vacuum deaerator groove is estimated with the deaeration groove of as shown in Figure 4 cross section ovalize.The size of vacuum deaerator groove and the liquid level of melten glass are as follows respectively.
The length L of melten glass stream: 9m
The maximum value W of the internal diameter of the horizontal direction of melten glass stream
1: 480mm
The height D:320mm of vacuum deaerator groove
The liquid level of melten glass: 250mm
Melten glass by the vacuum deaerator groove is assumed to following condition.
Glass: liquid crystal indicator (LCD) non-alkali glass (the system AN100 of Asahi Glass Co., Ltd (Asahi Glass Co., Ltd))
Flow: 70 tons/day
Temperature (on average) during by the vacuum deaerator groove: 1430 ℃
Viscosity during by the vacuum deaerator groove: 100Pas
Density during by the vacuum deaerator groove: 2380kg/m
3
(embodiment 1)
For the oval-shaped vacuum degassing apparatus in cross section, to first member deaeration performance that has been Fig. 3 and first member 14 shown in Figure 4, second member for the average evaluation of the Fig. 3 and second member 15 shown in Figure 5.The position that is provided with in the size of first member 14 and second member 15 and the melten glass stream is distinguished as follows.
[first member 14]
Height h from the lower end of the bottom surface to the first of deaeration groove member
1: 125mm
The height of first member (thickness) H
1: 125mm
Distance apart from the upstream extremity of melten glass stream: 4.5m
[second member 15]
The height h of second member
2: 178mm
The maximum value W of the transverse width of second member
2: 200mm
First member and second member apart from d:175mm
For the deaeration performance, but estimated the absolute pressure (P of the bubble of 10000 diameter 100 μ m of deaeration
Th) and the position of the last come-up of bubble apart from the distance of the upstream extremity of deaeration groove (the longest come-up apart from).P
ThValue big more, then deaeration performance is good more.In addition, the longest come-up distance is more little, and then deaeration performance is good more.The results are shown in table 1.Also have, in the table 1, show described P
ThWith P
0Pressure difference and the longest come-up distance.Described P
0But be the absolute pressure of the bubble of 10000 diameter 100 μ m of deaeration when second member is not set.Comparative example 1 is the example that the situation of second member is not set.
(embodiment 2)
Except making the inclination of second member, implement similarly to Example 1.The upper end of described second member inclination downstream is oblique, disposes in the mode with respect to vertical inclination 61 ° (with respect to 29 ° of horizontal directions).
(embodiment 3)
Except first member adopts the first member 14a shown in Figure 10, implement similarly to Example 1.Height h from the lower end of the bottom surface to the first of deaeration groove member
1Be 85mm, the height of first member (thickness) is 165mm, is 4.5m from the distance of the upstream extremity of upstream extremity to the first member of melten glass stream.L among Figure 10
1Be 524mm, L
2Be 498mm.The end in the downstream side of first member and second member be 627mm apart from d.
(embodiment 4)
Except first member adopts the first member 14b shown in Figure 11, implement similarly to Example 1.Height h from the lower end of the bottom surface to the first of deaeration groove member
1Be 125mm, the height of first member (thickness) is 125mm, is 4.5m from the distance of the upstream extremity of upstream extremity to the first member of melten glass stream.L among Figure 11
3Be 200mm, L
4Be 188mm.The end in the downstream side of first member and second member be 150mm apart from d.
[table 1]
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | |
| ?P th-P 0[kPa] | 1.4 | 0.5 | 2.9 | 1.5 | 0 |
| The longest come-up distance [m] | 7.8 | 8.2 | 7.0 | 7.8 | 9.3 |
Then, except changing in following 2 kinds of modes under the state that first member is fixed as the Fig. 3 and first member 14 shown in Figure 4 second member, implement similarly to Example 1.
(embodiment 5)
Second member: the second member 15a shown in Figure 12
The height h of second member
2: 178mm
H among Figure 12
2Be 75mm, L
5Be 200mm.The end in the downstream side of first member and second member be 263mm apart from d.
(embodiment 6)
Second member: the second member 15b shown in Figure 13
The height h of second member
2: 178mm
H among Figure 13
3Be 93mm.The end in the downstream side of first member and second member be 263mm apart from d.
The results are shown in table 2.Also have, the result who also shows embodiment 1 in the table 2 is used for comparison.
[table 2]
| Embodiment 1 | Embodiment 5 | Embodiment 6 | |
| P th-P 0[kPa] | 1.4 | 0.6 | 0.3 |
| The longest come-up distance [m] | 7.8 | 8.5 | 9.3 |
(embodiment 7)
For embodiment 1, with W
2Changing into 120mm, 200mm and 280mm implements for these 3 kinds.Each P
Th-P
0Value be respectively 1.1kPa (225mm), 1.4kPa (375mm), 1.3kPa (525mm).
(embodiment 8～13, comparative example 2～3)
H in the formation of change embodiment 1 as shown in the table
2, implement as embodiment 8～13, comparative example 2, comparative example 3.The results are shown in table 3.
[table 3]
Also have, with the height h in the formation of embodiment 1 from the lower end of the bottom surface to the first of deaeration groove member
1Change into 125mm, 105mm, 85mm implements P for these 3 kinds
Th-P
0Value because of h
1Change and the difference that produces below 0.1kPa, the clarifying effect to melten glass does not impact.
(embodiment 14～20)
For embodiment 1, change first member as shown in table 4 and second member apart from d, implement as embodiment 14～20.The results are shown in table 4.
[table 4]
(embodiment 21)
The vacuum deaerator groove is estimated with the rectangular deaeration groove in cross section as shown in Figure 6.The size of vacuum deaerator groove and the liquid level of melten glass are as follows respectively.
The length L of melten glass stream: 4.0m
The maximum value W of the internal diameter of the horizontal direction of melten glass stream
1: 975mm
The height D:600mm of vacuum deaerator groove
The liquid level of melten glass: 200mm
To first member clarifying effect of melten glass that has been Fig. 3 and first member 14 shown in Figure 6, second member for the average evaluation of the Fig. 3 and second member 15 shown in Figure 7.The position that is provided with in the size of first member 14 and second member 15 and the melten glass stream is distinguished as follows.
Height h from the lower end of the bottom surface to the first of deaeration groove member
1: 100mm
The height of first member (thickness): 100mm
Distance apart from the upstream extremity of melten glass stream: 2.0m
The height h of second member
2: 140mm
The maximum value W of the transverse width of second member
2: 459mm
First member and second member apart from d:181mm
For the clarifying effect of melten glass, but estimated the absolute pressure (P of the bubble of 10000 diameter 100 μ m of deaeration
Th) and the position of the last come-up of bubble apart from the distance of the upstream extremity of deaeration groove (the longest come-up apart from).The results are shown in table 5.Also have, in the table 5, show P
ThWith P
0' pressure difference.Described P
0But ' be the absolute pressure of the bubble of 10000 diameter 100 μ m of deaeration when second member is not set.
[table 5]
| Embodiment 21 | Comparative example 4 | |
| P th-P 0′[kPa] | 1.1 | ?0 |
As mentioned above, if adopt defoaming device of the present invention, can make the clarifying effect raising not reducing vacuum tightness or improve under the situation of condition changing of clarification operations such as temperature of melten glass.
The possibility of utilizing on the industry
Defoaming device of the present invention can be used for removing bubble from melten glass.
In addition, quote all the elements of Japanese patent application 2008-150557 number specification, claims, accompanying drawing and the summary of filing an application on June 9th, 2008 here as the announcement of specification of the present invention.
The explanation of symbol
10: defoaming device (vacuum degassing apparatus)
11: deaeration groove (vacuum deaerator groove)
12: tedge
13: down-comer
14,14a, 14b: first member
15,15a, 15b: second component
16: the space
17: the three members
200: melting channel
220: upstream slot
240: downstream slot
G: melten glass
Claims (7)
1. the defoaming device of a melten glass comprises the introducing port with melten glass and the deaeration groove of relief outlet, it is characterized in that,
Be provided with the bubble floating unit that comprises first member and second member in the described deaeration groove,
The mode of whole width that described first member impregnated in melten glass with at least a portion and is arranged at the melten glass stream of described deaeration groove is installed on the inwall of described deaeration groove,
The mode that described second member extends upward with the bottom surface side from described deaeration groove is installed on the inwall of described deaeration groove,
The condition setting of described first member and described second member following to satisfy (1)～(3):
(1) described first member is positioned at the upstream side of the flow direction of melten glass with respect to described second member;
(2) distance of described first member on the flow direction of melten glass and described second member is 50～400mm;
(3) will be from the bottom surface of described deaeration groove be made as h to the height of the lower end of described first member
1, the height from the bottom surface of described deaeration groove to the upper end of described second member is made as h
2The time, satisfy relational expression h
1≤ h
2
2. the defoaming device of melten glass as claimed in claim 1 is characterized in that, described second member is provided with the gap that can supply melten glass to pass through.
3. the defoaming device of melten glass as claimed in claim 1 is characterized in that, has the gap that can pass through for melten glass between the inwall of described deaeration groove and described second member.
4. the defoaming device of melten glass as claimed in claim 3 is characterized in that, the maximum value of the internal diameter of the horizontal direction of described deaeration groove is made as W
1, the maximum value of the transverse width of described second member is made as W
2The time, satisfy relational expression 0.2≤W
2/ W
1≤ 0.9.
5. as the defoaming device of each the described melten glass in the claim 1～4, it is characterized in that, from the bottom surface of described deaeration groove to the height h of the lower end of described first member
1Be 70～250mm.
6. as the defoaming device of each the described melten glass in the claim 1～5, it is characterized in that the planeform of described first member satisfies following formula:
w
1＜w
2；
In the formula, w
1Be the flow transverse width of described first member of direction upstream side of melten glass, w
2Be the flow transverse width of described first member in direction downstream side of melten glass.
7. as the defoaming device of each the described melten glass in the claim 1～6, it is characterized in that, in described deaeration groove, be provided with the described bubble floating unit more than 2.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-150557 | 2008-06-09 | ||
| JP2008150557 | 2008-06-09 | ||
| PCT/JP2009/060482 WO2009151034A1 (en) | 2008-06-09 | 2009-06-08 | Apparatus for degassing molten glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102056849A true CN102056849A (en) | 2011-05-11 |
| CN102056849B CN102056849B (en) | 2014-05-14 |
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ID=41416741
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980122207.3A Active CN102056849B (en) | 2008-06-09 | 2009-06-08 | Apparatus for degassing molten glass |
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| Country | Link |
|---|---|
| JP (1) | JP5630265B2 (en) |
| KR (2) | KR20130079606A (en) |
| CN (1) | CN102056849B (en) |
| TW (1) | TWI401222B (en) |
| WO (1) | WO2009151034A1 (en) |
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| CN105102382A (en) * | 2013-09-03 | 2015-11-25 | Lg化学株式会社 | Heterogeneous glass removing apparatus and glass manufacturing apparatus comprising same |
| CN107596939A (en) * | 2017-10-24 | 2018-01-19 | 武汉华星光电半导体显示技术有限公司 | Detection means, agitator and defoaming method |
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| KR20130084215A (en) * | 2010-05-19 | 2013-07-24 | 아사히 가라스 가부시키가이샤 | Pressure reducing and defoaming device for molten glass, molten glass manufacturing method, and glass product manufacturing method |
| CN103080026B (en) * | 2011-03-31 | 2016-04-27 | 安瀚视特控股株式会社 | The manufacture method of sheet glass |
| CN105645737B (en) * | 2011-03-31 | 2018-08-07 | 安瀚视特控股株式会社 | glass plate manufacturing method |
| CN106573813B (en) * | 2014-07-24 | 2019-06-28 | Ａｇｃ株式会社 | Glass melting material producing device, glass melting object manufacturing method, glass article manufacturing device and glass article manufacturing method |
| JP6585983B2 (en) * | 2015-09-30 | 2019-10-02 | ＡｖａｎＳｔｒａｔｅ株式会社 | Glass substrate manufacturing method and glass substrate manufacturing apparatus |
| KR102201724B1 (en) * | 2019-08-07 | 2021-01-13 | 주식회사 에이치에스테크놀로지 | Bublle chatcher |
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| JP4446283B2 (en) * | 2002-11-29 | 2010-04-07 | 日本電気硝子株式会社 | Glass melting furnace |
| JP5067371B2 (en) * | 2006-08-29 | 2012-11-07 | 旭硝子株式会社 | Molten glass conduit structure and vacuum degassing apparatus using the conduit structure |
-
2009
- 2009-06-08 WO PCT/JP2009/060482 patent/WO2009151034A1/en active Application Filing
- 2009-06-08 KR KR1020137013391A patent/KR20130079606A/en not_active Application Discontinuation
- 2009-06-08 JP JP2010516850A patent/JP5630265B2/en not_active Expired - Fee Related
- 2009-06-08 CN CN200980122207.3A patent/CN102056849B/en active Active
- 2009-06-08 KR KR1020107022354A patent/KR101379601B1/en active IP Right Grant
- 2009-06-09 TW TW098119186A patent/TWI401222B/en not_active IP Right Cessation
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0769648A (en) * | 1993-09-02 | 1995-03-14 | Canon Inc | Glass fusing furnace |
| CN1408655A (en) * | 2001-09-28 | 2003-04-09 | 旭硝子株式会社 | Vacuum degassing device of glass melt |
| CN1919758A (en) * | 2005-08-24 | 2007-02-28 | 肖特股份有限公司 | Process to refine a glass melt and an apparatus to perform said process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105102382A (en) * | 2013-09-03 | 2015-11-25 | Lg化学株式会社 | Heterogeneous glass removing apparatus and glass manufacturing apparatus comprising same |
| CN105102382B (en) * | 2013-09-03 | 2018-06-22 | Lg化学株式会社 | Glass manufacturing apparatus for the device for eliminating heterogeneous glass and comprising described device |
| CN107596939A (en) * | 2017-10-24 | 2018-01-19 | 武汉华星光电半导体显示技术有限公司 | Detection means, agitator and defoaming method |
| CN107596939B (en) * | 2017-10-24 | 2020-05-05 | 武汉华星光电半导体显示技术有限公司 | Detection device, stirrer and defoaming method |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI401222B (en) | 2013-07-11 |
| KR101379601B1 (en) | 2014-03-28 |
| JP5630265B2 (en) | 2014-11-26 |
| CN102056849B (en) | 2014-05-14 |
| TW201008888A (en) | 2010-03-01 |
| JPWO2009151034A1 (en) | 2011-11-17 |
| KR20110016863A (en) | 2011-02-18 |
| KR20130079606A (en) | 2013-07-10 |
| WO2009151034A1 (en) | 2009-12-17 |
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